Forcing-machine.



E. E. ALLEN.

FORGING MACHINE,

APPLIGATloN FILED 00T. 11. mi.

'LUQSW Patented June 2, 1914.

UNITED STATES PATENT -oEEroE DWARD ALLEN, OF ERIE, PENNSYLVANIA,ASSIGNOR TO THE ALLEN MACHINE COMPANY, OF ERIE, PENNSYLVANIA, .ACORPORATION OF PENNSYLVANIA.

FORCING-IVIACHINE.

Specification of Letters Patent.

'application sled october 11, 1911.

To all whom t may concern Be it known that I, EDWARD E. ALLEN, a citizenof the Uni-ted States, residing at Erie, in the county of .Erie andState of lennsylvania,` have invented certain new and usefulImprovements in Forcing-Machines; and Ido hereby declare the followingto be a full, clear, and exactdescription of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, and to theletters of reference marked thereon, forming part of thisspe'cliication. My invention relates to forcing machines, and has forits object the construction of .a forcing machine adapted to manipulateplasy tic material in which machine the end-thrust of the forcingscrewis practically elimi-V nated. This and other featuresof my 'inventionwill appear' hereinafter in the speci fcation, and are illustrated inthe drawings ink which:

Figure l is a front View in elevation of my improved forcing machine.Fig. 2 is a top or plan view thereof; Fig. 3 is a vertical centralsection of the body portion thereof showing portions of the activemechanism in elevation. Fig. 4 is a transverse central section of thesame.

' Machines of this character are generally used in factories wherein istreated plasticv material, such as clay or rubber, which in theltransformation from a mass without form intol a body with form, as inthe malo ing of bricks, tile, carriage tires, and rubber tubing, isforced through dies of the required formation, to produce a continuouscolumn or tube, which may afterward be dried and 40 burned, or otherwisecured. Also in the rubber re-claiming art my improved machine may beemployed to force the plastic, re-

clalmed rubber through a suitable screen' secured in the case of themachine, for the purpose of separating foreign substances, i which havenot been destroyed by the action of the chemicals employed, from themass. In these drawings A, indicates the base of the` machine, and A Aindicate pillars for supporting the operative parts thereof.

Upon the pillars A', I mount the body B, of`

the machine whichis preferably formed of cast metal having a hollowcentrallongitudinal cylinder b, therein which is surrounded by annularjacket chambers b2, b3 and b* which may be filled with a temperaturecontrolling medium when desired, and there are also provided feedopenings b t adjacent to the ends of the cylinder, which eX- tendthrough the walls of the cylinder b and 6o outward through the jacketchambers b3 and b4, as shown in the drawing. Upon the upper side of thebody B, I place a steam or water chest C which is divided intocompartments c2, es and c* each of which com- 65 partments communicatingwith one of the chambers b2, b3 and b4, and each of said com partmentsis provided with inlet cocks o5 on one side for water and c6 on theother side for steam, and the acket chambers t2, be and 7g b4, vare alsoprovided with escape pipes c7, through which the temperature regulatingmedium in the jacket chambers may be permitted to escape. Within thehollow central cylinder b, I place a forcing screw D, which is providedwith a right-andleft worm thread, and around the middle portion of thisforcing screw D, I preferably place a circumferential supporting ring orrib d, which may contact with the inner wall of 3g the central cylinderZ), and prevent any undue springing of the screw D. At each end thescrew D is supported upon journals D', which are provided with thrustrings d to provide against certain contingencies here- 35 inafter setforth. These journals D are supported in bearings 2-'- 3, the lower halfD2, thereof resting upon the pillars A', and the upper half D3 thereofbeing bolted to the lower half by means of the `bolts d2, as shown, andboth halves being secured t0 the ends of the body B, by means of boltsD4. The screw D, is preferably provided with a central longitudinalopening als (see Figs. 3y and 4l) therethrough, through which 95 Wateror steam may be circulated in order to regulate the'temperature of thescrew. Upon the ends of the forcing screw D, outside of the journals D',thereon, I place suitable driving wheels E preferably of the spurgeartype with the inner ends'of the hubs E= thereof contacting against theouter end of the bearings D2-D3, which said wheels E, receiving motionand power through the medium of the pulley F, shaft'f and pinions 10:54

f', mounted in suitable bearings G, on thel pillars A. Stuffing boxmechanism H, is provided in each end of the forcing screw through whichsupply and., dicliarlm` pipes H pass, by meansofwhich tempera# l11o tureregulating mediums may be circulated through the forcing screw D.Opening from \the screw-chamber within the central cylinder at rightangles to the axis thereof, I

provide a discharge openin J, within which suitable dies, or a screennot shown). may be secured,'the middle jacket chamber b2 being soextended as to jacket said discharge opening, as shown in Fig. 4:.

In operation power is applied to the pul ley F, and therethrough to thespur-wheels E which cause the forcing screw D to rotate. Plasticmaterial to be manipulated is then fed into the machine through theopenings l5 b', care being taken to keep an equal sup-v ply in eachopening. In case the supply of material in either opening b', shouldfall short thev thrust rings d" will prevent end? wise movement of thescrew D. The matel rial fed into the opening Z2', is caught by the screwand carried from each end'toward .the discharge opening J, from which itmay emerge through' a screen or die (not shown) of any suitable forni,in a continuously moving stream. During this operation it may benecessary to raise the temperature of the walls of the cylinder b, or tocool them as the case may be; in which case the end portions may be madecool or warm, or the middle portion maybe made cool or warm independentof the end portions, by permitting steam or Water 'to circulate throughthe jacket chambers b2, b3 and b4, and like# wise the screw D, can becooled orwarmed by permitting water or steam to 'circulate 35 throughthe screw.

Having thus shown and described my invention so as to enable others toconstruct and utilize the same what I claim as new and desire to secureby Letters-Patent is:

A base plate, pedestals secured thereon, a cylinder vhaving feedopenings at each end thereof and a discharge opening at the intermediateportion thereof, a flange around said discharge opening, horizontallydivided thrustvjournal bearings on said pedestals, radial flanges onsaid bearings, bolts passing through said anges and secured in the endsof said cylinder, a right and left hand forcing screw within saidcylinder and mounted in said bearings, spur gear wheels secured on theends of said screw outside of said journal bearings, a drive-shaftmounted in bearings on said pedestals, pinions on said shaftintermeshing with said spur-gear .wheels, and means for rotating saidshaft,

substantially as set forth.v

In testimony whereof I affix my signature,

in presence of two witnesses.

EDWARD E. ALLEN.

Witnesses:

II. M. STURGEON, FLoRnNCE S'rocKnR'r.

Copies of this patent may be obtained for ve cents each, by addressingther Commissioner of Patents,

Washington, D. G. J

